
*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.inner{
    margin: 0 auto;     
}

.inner_hd{    
    text-align: center; /*子元素左右居中*/        
}

.inner_hd div{
    padding: 15px 15px 15px 5px;
    font-size: 36px;
    color: #313131;
    font-weight: bold;  
    display: inline-block;/*宽度为内容宽度*/
    position: relative;/*提供为子元素参考点*/
}
.inner_hd .top_left{
    position: absolute;
    top:40%;
    left: 0px;
}

.inner_hd .top_right{
    position: absolute;
    top:10%;
    right: 0px;
}

.item{   
    width: 100%; 
    display: flex;
    flex-wrap: wrap;
}

.item li{
    list-style: none;
    width: 20%; 
    overflow: hidden;  
    padding: 10px 10px;
}

.item a{
    text-decoration: none;
    color: #333;
}

.item .top_img{
    border-radius: 10px;
    width: 100%;
    max-height: 100%;
}
.item h2{
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 15px;
    color: #515151;
}

.item  .bottom_box{
    position: relative;
}

.item .bottom_left{
    font-size: 15px;
    color: #919191; 
    height: 30px;
    line-height: 30px;   
}

.item .bottom_right{
    height: 30px;
    line-height: 30px;
    font-size: 15px;
    color: #919191; 
    position: absolute;
    right: 0;   
    background-image: url(../img/icon.jpg); 
    background-repeat: no-repeat;
    padding-left: 15px;
    background-position: 0 8px; 
}
@media screen and (max-width:575px){
    .inner{
        width: 100%;   
    }
    .item li{
        width: 50%; 
    }
    
}
@media screen and (min-width:576px){
    .inner{
        width: 540px;   
    }
    .item li{
        width: 50%; 
    }
    
}
@media screen and (min-width:768px){
    .inner{
        width: 720px;   
    }
    .item li{
        width: 33.3%; 
    }
    
}

@media screen and (min-width:992px){
    .inner{
        width: 960px;   
    }
    .item li{
        width: 25%; 
    }
    
}
@media screen and (min-width:1200px){
    .inner{
        width: 1200px;   
    }
    .item li{
        width: 20%; 
    }
}





